Nut-making machine and the like.



P. E. BRIGHTMN. NUT MAKING MACHINE AND THB LIKE. APPLICATION FILED MAY 26,1913.

1,116,5566, Patented N0v.10,1914.

3 SHEETS-SHEET 1.

F.. E. BRIGHTMAN.x NUT MAKING MACHINE AND THB LIKE.

.APPLICATION FILED MAY 26, 1913.`

Patented Nov.. 10, 1914 3 SHEETS-SHEET 2.

P. E. BRGHTMAM NUT MAKING MACHINE AND THE LIKE. APPLICATION FILED MAY 26, 1913.

3 SHEETS-SHEET 3.

QW( @Y6/149%@ l /Sy Qq/.5-

Patented Nov. 10, 19M.

I automatic metal working machines designed STATES PATENT FFICE.

FRANK JE. BRIGHTMAN, 01E SANDUSKY, HX, .llllGNlt llll E. lli. MARSH,F

SANDUSKY, OHM).

NUT-.MAKING MACHINE AND hlm.

alienta.

Specicaton of Letters latent.

llatentedllov. 11W, 1914..

To all whom it may concer/.a

Be it known that l, FRANK E. BRIGHT- MAN, a citizen ci' the United States, and a resident of LSandusky, county ot Erie, and State of tlhio, have invented a new and useful lmproveinent in Nut-Making ldachines and the like, of which the i'ollowing is a specifica-tion, the principle of the invention being herein explained and the best mode in which l have contemplated apply ing the principle, so as to distinguish it from other inventions.

The present invention relates generally to to form successive articles trom a bar of stock, and it has been illustrated as inc-orporated in a machine for forming hexagonal nuts.

Among the general objects ot the invention are the provision of an improved means for leeding the stock .to the tools and an improved means tor gaging the length of stock led by such means.

To the accomplishment of the foregoing and related ends,`said invention, then, con-` sists of the means hereinafter fully described and particularly pointed out in the claims.

The annexed drawing and the following description set forth in detail certain mechanism embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used.

ln said annexed drawing: lTigure l is a front elevation of a machine embodying the invention, partly broken; lFig. 2 is a detail assumed to be broken above Fig. l; Fig. 3 is a detail ol the gaging means; Fig. l is a broken sectional view taken on the median plane of Fig. l; Fig. 5 is a section on the line 5--5 in Fig. d; Fig. d is a sectional detail; and Fig. 7 is a side elevation of the machine.

' The inachine comprises a suitable trame l having a rotatable stock-holding spindle 2 journaled in suitable bearing boxes 3 secured to the trame.

lower is applied to the machine at shalt l and is transmitted' therefrom to a vertical shalt 5l bearing at its upper end a sprocket 5. The sprocket 5 transmits power to a fear 6 which meshes with a gear .7 securedJ to. the spindle. .il

vertically reciprocable double cone sleeve is mounted on the spindle 2, and by its reciprocation oscillates pairs of levers 9 and l0 which in turn reciprocate a sleeve ad carried within the spindle 2, the sleeve bearing lugs 52 non-rotatably but slidably engaging slots 53 in the spindle. The sleeve lf3 carries at its lower end a split collet t7 in which is mounted a plural sided die conforming in cross section with the stock; the die conveniently comprises three pieces 48 supported on a flange 49, one of the pieces engaging a pin 50 in the collet. Conse- -quently the driven spindle, by engagement with the lugs 52, constantly rotates the reciprocable sleeve and the collet and plural sided die carried by the sleeve, in conjunction with the spindle, constitute a chuck by which the rotation of the spindle continuously rotates the stock irrespective of whether the stock is free to move axially through the spindle or not. The cone sleeve 8 is reciprocated by a yolre ll oscillated by a cam 5l carried by a gearl2. y The gear l2 is driven by a shaft 13 which is in turn driven by a gear carried by a worm gear la on shaft 55, the gear ll.- being .geared to a shaft l5 which is connected through a chain and gear train 16 with the main upright shaft 5l driven from power shaft Il.

A gage 17 is supported from the bed of.'

the frame l and is in axial alinement with the spindle 2, the gage comprising a fixed cylindrical. member 18 and a rotatable cylindrical member 19 mounted on the member 18 by a ball bearing. The opening through the cylindrical gage is in direct alinement with the central opening through the spindle.

A plurality ot suitable tools, illustrated as crowning tools 20, are secured to a slide 21 which is reciprocated transversely by rotation of a cam 22 which engages a roller 23 secured to the slide 2l.` Applurality of other tools, illustrated as saws 24, are secured to a slide 25 which 1s transversely reciprocated by the rotation oi a cam 26 rwhich engages a roller 2'? secured to the slide 25. rl`he cams 22 and 26 are mounted on the shaft 55 with gear la and are rotated thereby, while the saws 2li 4are rotated by gears 42 mounted to be driven by a chain, 43 from the sprocket 4A- which is connected to be driven by the main upright shaft 54 connected with power shaft 4.

Disposed below the gage 17 is a rotatable and verticallyreciprocable drill spindle 28 which is rotated reversely of the direction of rotation of the spindle 2 by having sprocket 29 driven by a chain from the main upright shaft 54. The drill is vertically reciprocable by a yoke 30 which is oscillated by a cam 56 carried by gear 31 on shaft 57 driven from shaft 15.

Spaced rods 32 are rigidly supported by t'he frame l above the spindle 2, and secured to the rods are one or more collars 33,' one of the collars being shown in Fig. 1 and another assumed to be positioned a ove it is shown in Fig. 2. Each of the collars 33 includes two separate sections 34 which can be moved away from each other by cams 35 operated by suitable hand levers. The two sections are formed at their inner ends with threaded semi-cylindrical recesses designed, when the sections are in inner position, to engage the threads of a feed screw 36. The feed screw 36 is formed at its lower end with a cone clutch face 37 with which is coperative a member formed with a cone clutch face 38, this member being adapted, as by a set screw 39, to have the upper or rear end of a bar of stock 40 ixedly secured to it.

In the operation of the machine a lever 41 is thrown so that no power` is applied to the machine, and the lever 60 is thrown so that rotation of the shaft 15 will not be effective to operate the yoke 30 to reciprocate the drill spindle. It is at times desir- Y able to operate the feed mechanism without operating the mechanism which advances t e tools and reciprocates the drill, and in such case a yoke lever 59 may be thrown to operate a usual clutch to disconnect shaft l5 from effective connection with shaft 54. A bar of stock is now inserted through the spindle until it projects'the depth of one nut below the collet, its end resting on somesuitable plug placed by hand on the gage. The upper end of the stock is secured by a set screw 39 to the member having a clutch face 38. A spring 45 vnormally retains the clutch face 38 in engagement with the clutch face 37 so that the rotation of the stock with the spindle is effective to rotate the feed screw 36. The machine is now operated by hand by rotation of the crank -58 until the end of the stock is crowned.

After the end of the stock is crowned, the plug is removed and the stock is fed down by hand `by rotation of the crank 58 until the end of the stock enters the cylindrical gage. The lever 60 is now thrown to render the drill reciprocating mechanism operative and the lever 41 is thrown to transmit power to the machine. It 4is obvious that as long as the stock is free to advance through the spindle the member which is secured to it will be clutched to the feed screw, and that since the stock is continuously rotated by the spindle it will cause a rotation of the feed screw in the collars 33, and consequently the stock will be fed axially through the spindle. When the end of the stock strikes the gage 17 so that its further advance is stopped, the feed screw will continue to rotate only for an instant, because it will, by a slight advance after advance of the stock has been stopped, compress the spring 45 and disengage the clutch faces 37 and 38, thus stopping the feed 0f the stock. Since the stock continuously rotates the rotatable gage 17 will measure the advance of stock and also coperate to disengage the clutch referred to without in any way binding the stock against rotation, while atv the same time it permit-s the drill to rise directly through it to the stock. The feed of the stock may also be stopped by the gripping of the stock in the spindle by the chuck, for this also prevents further advance of the stock so that a further slight advance of the feed screw will disengage the clutch. After the advance of the stock has stopped and the stock has been gripped in the spindle, the crowning tools and saws are reciprocated inwardly to the stock and simultaneously crown three nuts and saw into the stock adjacent each nut to such depth that after the tools and saws are retracted and the reversely rotating drill is raised through the gage, the drill will sever the formed nuts as it rises therethrough. The completed nuts then fall from the machine into a suitable receptaele when the drill is retracted and the chuck is actuated to loosen its grip on the stock. The spring 45 thereupon immediately throws the clutch into engagement and the feed screw is rotated and advances the stock until its end enters the conical recess in the rotating member 19 of the gage, whereupon the cycle is repeated. The cycle of operations continues until substantially all of the bar of stock has been worked, and the central opening throu h thespindle is of sufficient size to loosey receive the feed screw 36, and it may continue to advance until the member secured to the upper end of the stock reaches the chuck at the lower end of the spindle. `When` this point has been reached the sections of the collars 33 are retracted from their threaded engagement with the screw 36, and by any suitable means the feedscrew is again lifted to its position shown in Fig. l, and a new bar of stock is inserted and the cycle of operations repeated.

Other modes o-f applying the principle of my invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed, rovided the means stated by any of the fol owing claims or the equivalent of such stated means be employed. 4

l therefore particularly point out and distinctly claim as my invention l, ln a machine of the class described, the combination of a spindle adapted to receive and continuously rotate stock; a feed screw; and means adapted to be secured to the stock and normally non-rotatably connected to the L:feed screw, stoppage of the advance of the stock being effective to disconnect said means from the leed screw.

2. lln a machine of the class described, the combination of a spindle adapted to receive and continuously rotate stock; a feed screw; and means normally connecting the stock and feed screw, sto page of the advance oln the stock being e ective to disconnect the stock and feed screw.

3. ln a machine of the class described, the combination or a spindle adapted to receive and continuously rotate stock; a member adapted to be secured to the stock; a :leed screw; anormally engaged clutch connecting the member and screw; and means adapted to stop the advance of stock and thereby disen age the clutch.

4. ln a mac ine ofthe class described, the combination of a spindle adapted to receive and continuously rotate stock; a member adapted to be secured to the stock; a feed screw; a normally engaged clutch connecting the member and screw; and a rotatable gage adapted to stop the advance of stock and thereby disengage the clutch.

5. ln a machine of the class described, the combination of a spindle adapted to receive and continuously rotate stock; a member adapted to be secured to the stock; a leed screw; a normally engaged clutch connecting the member and screw; and means adapted to grip the stoel: in the spindle andA thereby disen age the clutch.

6. In a mac iine of the class described, the combination of a spindle adapted to receive and continuously rotate stock; a member adapted tovbe secured to the stock; a feed screw; a normally engaged clutch connect ing the member and screw; a rotatable gage adapted to 'stop the advance el? stock and thereby disen age the clutch; means adapt-v ed to grip te stock in the spindle; and transversely reciprocable tools mounted between the spindle and gage.

7. ln a machine of the class described, the

combination of a spindle adapted to receive and continuously rotate stock; a member adapted to be secured to the stock; a leed screw; a normally engaged clutch connecting the member and screw; a rotatable cylindrical gage alined with the spindle and adapted to stop the advance of stock and thereby disengage the clutch; means adapted to grip the stock in the spindle; transversely reciprecable tools mounted between the spindle and gage; and a tool longitudinally reciprocable through the gage.

8. ln a machine of the class described, the combination of a spindle adapted te receive and continuously rotate stock; a screw alined with and loosel spindle; a threaded colar comprising secn tions movable into and out 'of engagement with the screw; a member adapted to be secured toy the stock; and a clutch connecting the member and screw.

Signed by me, this 23 day of May, 1913.

FRANK E. BRIGHTMAN.-

Attested by- Grao. l). STEINMANN;

Rar l'l. WIL-amine.

receivable by the 

